 Posted: Sat Jan 16, 2010 7:56 pm Post subject: Dallmeyer 3" F1.9 C-mount lens |
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nojay wrote:
I've had this lens kicking about in a box for a while. I got it from a junk shop decades ago, fitted it to a B/W CCTV camera for some computer vision experiments then put it away and forgot about it until the box turned up again recently.
(Sorry, I can't seem to embed a photo in this message, so here's a link to one).
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| http://i231.photobucket.com/albums/ee12/nojay_photo/Odds%20and%20Sods/lens01.jpg |
I've not been able to discover much on the Web about this particular lens -- there are a whole load of Dallmeyer 1" and 2" F1.9 lenses out there but the 3" FL seems to be uncommon. The lens hood (which unscrews) is marked T.V. but I don't know what that implies -- I assume something of this quality wasn't commonly used on CCTV systems. Would it have been fitted to an OB camera or similar, perhaps? I presume the optics were based on a 16mm cine camera lens.
It has a 16-blade iris and the optics seem to be in fine condition but I am no expert in judging such things. The focus ring is stiff but smooth through its range. I don't have anything I can fit it to to test its optical properties; I am enamoured of the Micro Four Thirds cameras which people seem to enjoy stucking odd glass in front of but my toy budget is limited and Xmas cost me many shekels. |
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